Base | Representation |
---|---|
bin | 11010001110111… |
… | …011111001100101 |
3 | 1010200011120020011 |
4 | 122032323321211 |
5 | 1400132413411 |
6 | 111401210221 |
7 | 13622661244 |
oct | 3216737145 |
9 | 1120146204 |
10 | 440122981 |
11 | 20648aa01 |
12 | 103490971 |
13 | 7024c0cc |
14 | 4264a95b |
15 | 2898bc21 |
hex | 1a3bbe65 |
440122981 has 2 divisors, whose sum is σ = 440122982. Its totient is φ = 440122980.
The previous prime is 440122961. The next prime is 440122997. The reversal of 440122981 is 189221044.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 438232356 + 1890625 = 20934^2 + 1375^2 .
It is a cyclic number.
It is not a de Polignac number, because 440122981 - 213 = 440114789 is a prime.
It is a super-2 number, since 2×4401229812 = 387416476808652722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (440122961) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220061490 + 220061491.
It is an arithmetic number, because the mean of its divisors is an integer number (220061491).
Almost surely, 2440122981 is an apocalyptic number.
It is an amenable number.
440122981 is a deficient number, since it is larger than the sum of its proper divisors (1).
440122981 is an equidigital number, since it uses as much as digits as its factorization.
440122981 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4608, while the sum is 31.
The square root of 440122981 is about 20979.1082031625. The cubic root of 440122981 is about 760.6613478083.
The spelling of 440122981 in words is "four hundred forty million, one hundred twenty-two thousand, nine hundred eighty-one".
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